diff --git a/conanfile.py b/conanfile.py
index ab09afa..2283348 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -8,7 +8,7 @@ class MikageConan(ConanFile):
     requires = [
         #"boost/1.79.0",
         "boost/1.84.0",
-        "spdlog/1.10.0",
+        "spdlog/1.15.0",
         "cryptopp/8.5.0",
         "sdl/2.30.7", # 2.0.18 fixed swapped X/Y buttons on Switch Pro Controller
         "range-v3/0.12.0",
@@ -17,7 +17,7 @@ class MikageConan(ConanFile):
         "spirv-tools/1.3.268.0",
         "tracy/0.11.1",
         "xxhash/0.8.0",
-        "fmt/8.1.1",
+        "fmt/11.1.1",
     ]
 
     options = {
diff --git a/source/framework/image_format.hpp b/source/framework/image_format.hpp
index 5d944ab..c093ea2 100644
--- a/source/framework/image_format.hpp
+++ b/source/framework/image_format.hpp
@@ -36,7 +36,7 @@ enum class GenericImageFormat {
 
 template<> struct fmt::formatter<GenericImageFormat> : fmt::formatter<std::string_view> {
     template<typename FormatContext>
-    auto format(GenericImageFormat format, FormatContext& ctx) -> decltype(ctx.out()) {
+    auto format(GenericImageFormat format, FormatContext& ctx) const -> decltype(ctx.out()) {
         std::string_view name = std::invoke([format]() -> std::string_view {
             switch (format) {
             case GenericImageFormat::RGBA8:    return "RGBA8";
diff --git a/source/gdb_stub.cpp b/source/gdb_stub.cpp
index 783aab5..bd6104b 100644
--- a/source/gdb_stub.cpp
+++ b/source/gdb_stub.cpp
@@ -800,8 +800,9 @@ std::optional<std::string> GDBStub::HandlePacket(const std::string& command) {
 
             auto emu_process = std::dynamic_pointer_cast<HLE::OS::EmuProcess>(process);
             if (!emu_process) {
+                auto process_printer = HLE::OS::ProcessPrinter { *process.get() };
                 logger->warn("Debugger attempting to attach to non-emulated process {} ({})",
-                             pid_opt->first, process);
+                             pid_opt->first, process_printer);
                 return "E02";
             }
 
diff --git a/source/os.cpp b/source/os.cpp
index 9460e90..18ccd86 100644
--- a/source/os.cpp
+++ b/source/os.cpp
@@ -1406,7 +1406,7 @@ void MemoryManager::TransferOwnership(  std::shared_ptr<MemoryBlockOwner> old_ow
         const uint32_t chunk_addr = block_it->first;
         const uint32_t chunk_size = block_it->second.size_bytes;
 
-        fmt::print("Chunk: {:#x}-{:#x} (owner {})\n", chunk_addr, chunk_addr + chunk_size, fmt::ptr(block_it->second.owner.lock()));
+        fmt::print("Chunk: {:#x}-{:#x} (owner {})\n", chunk_addr, chunk_addr + chunk_size, fmt::ptr(block_it->second.owner.lock().get()));
 
         ValidateContract(!block_it->second.owner.expired());
 
@@ -3494,7 +3494,7 @@ void OS::TranslateIPCMessage(Thread& source, Thread& dest, bool is_reply) {
             }
 
             source.GetLogger()->info("{}Copying {}/{} bytes of static buffer data from {:#010x} to {:#010x} in thread {}:",
-                                     ThreadPrinter{source}, descriptor.static_buffer.size, dest_buffer_size, source_data_addr,
+                                     ThreadPrinter{source}, descriptor.static_buffer.size.Value(), dest_buffer_size, source_data_addr,
                                      dest_buffer_addr, ThreadPrinter{dest});
             std::string data;
             auto max_size = std::min<uint32_t>(64, descriptor.static_buffer.size);
@@ -3544,7 +3544,7 @@ void OS::TranslateIPCMessage(Thread& source, Thread& dest, bool is_reply) {
 
             uint32_t static_buffer_offset = 0;
             source.GetLogger()->info("{}Setting up PXI buffer table {:#x} at address {:#x} in target process",
-                                     ThreadPrinter{source}, descriptor.pxi_buffer.id, dest_buffer_addr);
+                                     ThreadPrinter{source}, descriptor.pxi_buffer.id.Value(), dest_buffer_addr);
 
             auto base_physical_chunk = ResolveVirtualAddrWithSize(source.GetParentProcess(), buffer_address);
             if (!base_physical_chunk) {
@@ -3581,7 +3581,7 @@ void OS::TranslateIPCMessage(Thread& source, Thread& dest, bool is_reply) {
                 dest.WriteMemory32(dest_buffer_addr + static_buffer_offset + 4, buffer_size);
 
                 source.GetLogger()->info("Added PXI physical memory chunk {:#x} of size {:#x} in static buffer {} at {:#x}",
-                                        base_physical_chunk->first, buffer_size, descriptor.pxi_buffer.id, dest_buffer_addr + static_buffer_offset);
+                                        base_physical_chunk->first, buffer_size, descriptor.pxi_buffer.id.Value(), dest_buffer_addr + static_buffer_offset);
 
                 static_buffer_offset += 8;
 
@@ -3613,7 +3613,7 @@ void OS::TranslateIPCMessage(Thread& source, Thread& dest, bool is_reply) {
                     dest.WriteMemory32(dest_buffer_addr + static_buffer_offset + 4, chunk_size);
 
                     source.GetLogger()->info("Added PXI physical memory chunk {:#x} of size {:#x} in static buffer {} at {:#x}",
-                                            physical_chunk_address, chunk_size, descriptor.pxi_buffer.id, dest_buffer_addr + static_buffer_offset);
+                                            physical_chunk_address, chunk_size, descriptor.pxi_buffer.id.Value(), dest_buffer_addr + static_buffer_offset);
 
                     static_buffer_offset += 8;
 
diff --git a/source/os.hpp b/source/os.hpp
index ae4d422..28d09b4 100644
--- a/source/os.hpp
+++ b/source/os.hpp
@@ -2044,5 +2044,11 @@ std::ostream& operator<<(std::ostream& os, const HandlePrinter& printer);
 
 }  // namespace HLE
 
+template <> struct fmt::formatter<HLE::OS::ProcessPrinter> : ostream_formatter {};
+template <> struct fmt::formatter<HLE::OS::ThreadPrinter> : ostream_formatter {};
+template <> struct fmt::formatter<HLE::OS::ObjectRefPrinter> : ostream_formatter {};
+template <> struct fmt::formatter<HLE::OS::ObjectPrinter> : ostream_formatter {};
+template <> struct fmt::formatter<HLE::OS::HandlePrinter> : ostream_formatter {};
+
 // Now that we're done with the definitions, include some definitions that are required to instantiate the above structs (e.g. due to unique_ptr being used on incomplete types)
 #include "gdb_stub.h"
diff --git a/source/processes/am_hpv.cpp b/source/processes/am_hpv.cpp
index fe6caac..e7dae57 100644
--- a/source/processes/am_hpv.cpp
+++ b/source/processes/am_hpv.cpp
@@ -3,6 +3,7 @@
 #include "os.hpp"
 
 #include <platform/am.hpp>
+#include <fmt/ranges.h>
 
 namespace HLE {
 
diff --git a/source/processes/dsp.cpp b/source/processes/dsp.cpp
index 3be5c63..73a1430 100644
--- a/source/processes/dsp.cpp
+++ b/source/processes/dsp.cpp
@@ -785,7 +785,7 @@ void FakeDSP::OnIPCRequest(FakeThread& thread, Handle sender, const IPC::Command
 
     default:
         // TODO: Throw and catch IPCError instead
-        throw std::runtime_error(fmt::format("Unknown DSP IPC request {:#x}", header.command_id));
+        throw std::runtime_error(fmt::format("Unknown DSP IPC request {:#x}", header.command_id.Value()));
     }
 }
 
diff --git a/source/processes/fs.cpp b/source/processes/fs.cpp
index 98d5743..aa4ffd0 100644
--- a/source/processes/fs.cpp
+++ b/source/processes/fs.cpp
@@ -35,6 +35,8 @@
 #include <iostream>
 #include <sstream>
 
+#include <fmt/std.h>
+
 using namespace Platform::FS;
 
 namespace HLE {
@@ -1818,7 +1820,7 @@ static decltype(HLE::OS::ServiceHelper::SendReply) OnFileIPCRequest(FakeThread&
     return HLE::OS::ServiceHelper::SendReply;
 } catch (std::ios_base::failure& err) {
     thread.GetLogger()->error("Unexpected fstream exception in File IPC command {:#x} handled via object {}: {}",
-                              header.command_id, boost::core::demangle(typeid(*file).name()),
+                              header.command_id.Value(), boost::core::demangle(typeid(*file).name()),
                               IosExceptionInfo(err));
     throw;
 }
@@ -1860,7 +1862,7 @@ static decltype(HLE::OS::ServiceHelper::SendReply) OnDirIPCRequest(FakeThread& t
     return HLE::OS::ServiceHelper::SendReply;
 } catch (std::ios_base::failure& err) {
     thread.GetLogger()->error("Unexpected fstream exception in Directory IPC command {:#x} handled via object {}: {}",
-                              header.command_id, boost::core::demangle(typeid(dir).name()),
+                              header.command_id.Value(), boost::core::demangle(typeid(dir).name()),
                               IosExceptionInfo(err));
     throw;
 }
diff --git a/source/processes/fs_common.cpp b/source/processes/fs_common.cpp
index 818965b..749ac1c 100644
--- a/source/processes/fs_common.cpp
+++ b/source/processes/fs_common.cpp
@@ -8,6 +8,8 @@
 
 #include <codecvt>
 
+#include <fmt/std.h>
+
 namespace HLE {
 
 CommonPath CommonPath::FromUtf16(std::u16string_view utf16_data) {
diff --git a/source/processes/fs_hpv.cpp b/source/processes/fs_hpv.cpp
index dfbba23..511f9d4 100644
--- a/source/processes/fs_hpv.cpp
+++ b/source/processes/fs_hpv.cpp
@@ -17,6 +17,8 @@
 #include <codecvt>
 #include <variant>
 
+#include <fmt/ranges.h>
+
 namespace HLE {
 
 namespace OS {
diff --git a/source/processes/pxi.cpp b/source/processes/pxi.cpp
index 39f5a78..6f6d36d 100644
--- a/source/processes/pxi.cpp
+++ b/source/processes/pxi.cpp
@@ -24,6 +24,8 @@
 #include <iostream>
 #include <sstream>
 
+#include <fmt/ostream.h>
+
 std::vector<uint64_t>* nand_titles = nullptr;
 
 namespace std {
@@ -36,6 +38,8 @@ static std::ostream& operator<<(std::ostream& os, const Platform::PXI::PM::Progr
 
 } // namespace std
 
+template <> struct fmt::formatter<Platform::PXI::PM::ProgramInfo> : ostream_formatter {};
+
 namespace HLE {
 
 // namespace OS {
diff --git a/source/processes/pxi_fs.cpp b/source/processes/pxi_fs.cpp
index 803b47d..5c4244c 100644
--- a/source/processes/pxi_fs.cpp
+++ b/source/processes/pxi_fs.cpp
@@ -25,6 +25,8 @@
 #include <sstream>
 #include <iomanip>
 
+#include <fmt/ranges.h>
+
 // Hardcoded size for PXI buffers.
 // TODO: These buffers should only be 0x1000 bytes large, but our PXI tables currently may span more than that because they map individual pages as entries
 const auto pxi_static_buffer_size = 0x2000;
diff --git a/source/processes/pxi_fs.hpp b/source/processes/pxi_fs.hpp
index b1be44a..93c72de 100644
--- a/source/processes/pxi_fs.hpp
+++ b/source/processes/pxi_fs.hpp
@@ -4,8 +4,8 @@
 
 #include <platform/pxi.hpp>
 
-#include <boost/filesystem/fstream.hpp>
-#include <boost/filesystem/path.hpp>
+#include <fstream>
+#include <filesystem>
 #include <boost/optional.hpp>
 
 namespace HLE {
@@ -133,8 +133,8 @@ public:
     };
 
 private:
-    const boost::filesystem::path path;
-    boost::filesystem::fstream stream;
+    const std::filesystem::path path;
+    std::fstream stream;
 
     Policy policy;
 
diff --git a/source/processes/pxi_fs_host_file.cpp b/source/processes/pxi_fs_host_file.cpp
index 04e5a2e..ffa6ae6 100644
--- a/source/processes/pxi_fs_host_file.cpp
+++ b/source/processes/pxi_fs_host_file.cpp
@@ -3,9 +3,9 @@
 
 #include "pxi_fs_file_buffer_emu.hpp"
 
-#include <framework/exceptions.hpp>
+#include <fmt/std.h>
 
-#include <boost/filesystem.hpp>
+#include <framework/exceptions.hpp>
 
 #include <iostream>
 
@@ -25,7 +25,7 @@ HostFile::HostFile(std::string_view path, Policy policy) : path(std::begin(path)
 ResultAnd<> HostFile::Open(FileContext& context, OpenFlags flags) {
     context.logger.info("Attempting to open {} (create={})", path, flags.create);
 
-    if (!flags.create && !boost::filesystem::exists(path)) {
+    if (!flags.create && !std::filesystem::exists(path)) {
         return std::make_tuple(-1);
     }
 
@@ -58,7 +58,7 @@ void HostFile::Close(/*FakeThread& thread*/) {
 ResultAnd<uint64_t> HostFile::GetSize(FileContext& context) {
     context.logger.info("Attempting to get size of file {}", path);
 
-    uint64_t size = boost::filesystem::file_size(path);
+    uint64_t size = std::filesystem::file_size(path);
 
     return std::make_tuple(OS::RESULT_OK, size);
 }
@@ -68,7 +68,7 @@ ResultAnd<> HostFile::SetSize(FakeThread& thread, uint64_t size) {
 
     // TODO: Does this zero-fill the file as expected?
     // TODO: Expected by whom? If these are not the 3DS semantics, we still would want to have deterministic buffer contents here!
-    boost::filesystem::resize_file(path, size);
+    std::filesystem::resize_file(path, size);
 
     return std::make_tuple(OS::RESULT_OK);
 }
diff --git a/source/ui/installer.cpp b/source/ui/installer.cpp
index 8e7af58..fb95fd8 100644
--- a/source/ui/installer.cpp
+++ b/source/ui/installer.cpp
@@ -17,6 +17,8 @@
 
 #include <filesystem>
 
+#include <fmt/ranges.h>
+
 namespace HLE::PXI {
 std::array<uint8_t, 16> GenerateAESKey(const std::array<uint8_t, 16>& key_x, const std::array<uint8_t, 16>& key_y);
 }
diff --git a/source/video_core/src/video_core/shader_microcode.cpp b/source/video_core/src/video_core/shader_microcode.cpp
index 7ec6baa..73448d2 100644
--- a/source/video_core/src/video_core/shader_microcode.cpp
+++ b/source/video_core/src/video_core/shader_microcode.cpp
@@ -1554,7 +1554,7 @@ std::unique_ptr<ShaderEngine> CreateMicroCodeRecompiler(Context& context) try {
     auto vis = VisualizeShaderControlFlowGraph(prog, context.shader_memory.data(), context.shader_memory.size(),
                                 context.swizzle_data.data(), context.swizzle_data.size());
 //    std::cerr << vis << "\n";
-    throw std::runtime_error(fmt::format("OMG: {:#x}", context.registers.vs_main_offset));
+    throw std::runtime_error(fmt::format("OMG: {:#x}", context.registers.vs_main_offset.Value()));
 }
 
 } // namespace Pica::VertexShader